Reply #39: I should do that or bookmark it to link back to. Also, a correction.

[Chan790]

I did realize that I made a small omission. OC opt-out only applies to certain transaction types, namely signature-based card transactions.

They can still nail you for the NSF if you write a check that is paid out and you don't have the funds to cover it, in the case of ACH* debits which overdraft the account or ATM & PIN-based transactions that overdraw the account (though these last two logically don't occur often, they'd usually decline at the point-of-sale automatically.)

*-Automated Clearing House. A type of automatic pre-approved-by-the-client scheduled transaction; usually something that occurs monthly or quarterly in the exact same amount like insurance payments, student loan payments or in some cases rent (These are ACH Debits). Also, payroll direct deposits (Those are ACH Credits) You'd know if you have an ACH transaction though as you'd have to have given your account number and routing number to the company making the withdrawal or deposit. I find it helps to think of ACH Debits as a "Direct Withdrawal" or "a Direct Deposit from you to someone else". I do a lot of ACH transactions so I set up a separate checking account (used for nothing else) for ACH debits and transfer the exact amount every month into it several days before the first ACH debit comes out. (Online Banking lets me know if the transfer fails so I have time to make sure the $ is there.) I keep a minimum fee-waiver balance in the account at all other times.